Music Folder Storage Cabinets

I see that the last post regarding this was a bit over 2 years ago, but I am just about to purchase new folders for my choir, thanks to a generous member, and they are going to be "The Black Folder" which will not fit into my existing storage cabinets. Is there any chance that these plans are still floating around out there somewhere? I found that the stores are still selling them for $1,000, which is impossible for my small parish. You could email or snail mail to me. Thank you SO much!